Karel1987 asked "but does it work?" and your answer was that nobody has tested it yet as far as you know. Then I said I'm worried it won't work, and your reply to that was then I haven't set it up right. How would you know? Have you tried and tested it?
Your statements are contradictory. I want something tried and tested, seeing that they had to pull the first version off the market because it didn't work. Facial muscles relax when unconscious and then leakage around the mask occurs. There's no information on how they can guarantee that the revised version will work, even with the different sized masks. No information on how or what or who they tested it on.